26243117 has 2 divisors, whose sum is σ = 26243118. Its totient is φ = 26243116.

The previous prime is 26243093. The next prime is 26243179. The reversal of 26243117 is 71134262.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25593481 + 649636 = 5059^2 + 806^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26243117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26243017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13121558 + 13121559.

It is an arithmetic number, because the mean of its divisors is an integer number (13121559).

Almost surely, 2^26243117 is an apocalyptic number.

It is an amenable number.

26243117 is a deficient number, since it is larger than the sum of its proper divisors (1).

26243117 is an equidigital number, since it uses as much as digits as its factorization.

26243117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 26.

The square root of 26243117 is about 5122.8036269215. The cubic root of 26243117 is about 297.1701194850.

Adding to 26243117 its reverse (71134262), we get a palindrome (97377379).

The spelling of 26243117 in words is "twenty-six million, two hundred forty-three thousand, one hundred seventeen".